Improvement in processes for the manufacture of material for bearings



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To all whom it may concern:

Be it known that I, SIGISMUND OOHNE, a resident at London, Kingdom of Great Britain, have invented a new Composition for Axle, Shaft, Spindle, and other similar Bearings, and the Manufacture of Bearings therefrom, of which the following is a specification:

My invention consists in the making of a composition of bad heat-conducting materials, as hereinafter described, and in the making therefrom of bearings notrequiring any lubrieating, such bearings being applicable for all kinds of engines and machinery, railway and a other cars, and wheeled vehicles.

For the making of this composition, I take of asbestos about seventy-five per centum, and 1 of um ba o about twenty five percentum. Boll these materials are well ground and well mixed together. I then add such a quantity of liquid silicate of soda or liquid silicate of )OtaSll as to producemuth the materla s above named,a semi-dry paste. This paste is then pressed under hydraulic or other pressure, so as to convert it into a hard mass. This mass is then dried either by heat or by exposure in the open air until all humidity is evaporated. Out of this mass is the bearing out or turned. The bearing may be, instead, directly pressed out of the semi-dry paste into the shape required for a mold or die, and then dried. In

either case the bearing produced is dipped into hot melted parafline or ozocerite, or into a.

solution of ara no 111 benzo e or other mineral oil, in oi-der that all the pores in the com- COAHNG 0R PLASTIC "itA;TICTOSSERBTBTBn99 SIGISMUND COHNE, OF LONDON, GREAT BRITAIN.

PATENT OFFICE.

- IMPROVEMENT lN PROCESSES FOR THE MANUFACTURE OF MATERIAL FOR BEARINGS.

Specification forming part of Letters Patent No. 166,188, dated August 3, 1875; application filed April 2| 1874.

pound of which the bearing is made may be filled with the said parafline or ozocerite; or the hearing may be placed in an exhaust or vacuum chamber, and the parafline or ozocerite thus introduced.

I have hereiuabove stated the proportions in or about which I make the composition; but I do not confine myself strictly thereto, but may somewhat vary them to suit the particular class of bearing for which the compo sition is to be used.

Having now particularly described and ascertained the nature of my said invention for a new composition for axle, shaft, spindle, and other similar bearings, and the manufacture of bearings therefrom, I wish it to be clearly understood that What I claim, and desire to secure by Letters Patent, is-

The process of making a material for bearings for general purposes by mixing well together ground asbestus .and plumbago, and

making therefrom a semi-dry paste by the mixture therewith of liquid silicate of soda or liquid silicate of potash, then drying the said paste and immersing it in, or causing it to absorb, hot melted parafiine or ozocerite, or a solution of parafline in beuzole, substantially as herein specified.

SIGISMUND OOHNE. Witnesses:

MATTHEW AUGUSTUS SOUL, WALTER J OHN TURNER.

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